JPH0648687U - Indwelling needle - Google Patents

Abstract

(57) [Summary] {Purpose} A cross stopcock having a passage blocked by a rubber membrane and a passage therethrough is provided in a part of the catheter, and is used when inserting an indwelling needle, injecting a drug, or performing hemodialysis. An indwelling needle that prevents the outflow of blood and drugs. {Structure} An indwelling needle in which a part of the catheter (1) is provided with a cross stopcock (3), one of which is blocked by a rubber membrane (2) and the other of which penetrates.

Description

[Detailed Description of the Device] This utility model relates to an indwelling needle having a function of preventing the outflow of blood and drugs, which is called a cross stopcock.

 In conventional indwelling needles, a rubber tube or the like is used at the back of the indwelling needle to prevent the blood or drug being used by the patient from flowing out or spouting, and the tube is bent or bent. However, when it is used for arteries such as dialysis, the ejection force of blood is so strong that it often flows out even with due care.

 The present invention has been made in order to eliminate this drawback. Explaining this with reference to the drawings, a cross that is cut off by a rubber film (2) in one direction at one part of the catheter (1) and penetrates the other A stopcock (5) is provided.

 Since the present invention has such a structure, when piercing an artery, the cross stopcock is directed to the side with the rubber membrane so as to block the passage of the catheter, and the inner needle (3) is pierced through the gum membrane. Let it push it all the way in and fix it. Even if the inner needle is removed from the indwelling needle by inserting it into the artery in this state, blood and drugs are blocked by the rubber membrane inside the catheter and do not squirt or flow out from the indwelling needle. Next, when injecting a drug or performing artificial dialysis using the indwelling needle inserted into the blood vessel as described above, a drug container or medical device was connected to the adapter (4) at the rear of the catheter. After that, if the side that penetrates the cross plug and the passage inside the catheter are aligned, the drug and blood can pass through the catheter.

[Brief description of drawings]

{FIG. 1} A cross-sectional view of the comb film of the present invention in use. {Fig. 2} Fig. 2 is a cross-sectional view of the present invention in use in a penetrated state. {Explanation of symbols} (1) is a catheter (2) is a rubber membrane (3) is an inner needle (4) is an adapter (5) is a cross stopcock

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[Procedure amendment]

[Submission date] November 22, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a cross-sectional view of the inner needle of the present invention in use through a rubber membrane.

FIG. 2 is a cross-sectional view of the present invention in a state where blood is prevented from backflowing and an adapter is attached.

FIG. 3 is a cross-sectional view of the cross stopcock of the present invention when it is in a penetrating state.

[Explanation of symbols] (1) is a catheter (2) is a rubber membrane (3) is an inner needle (4) is an adapter (5) is a cross stopcock

Claims (1)

[Scope of utility model registration request] {Claim 1} An indwelling needle having a cross stopcock, one of which is blocked by a rubber membrane and the other of which penetrates a part of the catheter.